A cozy, creamy baked chicken pasta casserole with a silky cheese sauce, tender bites of chicken, and a golden bubbly top—perfect for easy weeknight dinners and quick family meals.
3cupsgrated cheese (cheddar, Colby jack, Swiss, or a combo), divided (reserve 1/2 cup for topping)
1/2teaspoonred pepper flakes
salt and black pepper, to taste
Instructions
Preheat oven to 350°F (175°C). Grease a 9×13-inch baking dish.
In a large skillet over medium heat, melt the butter. Add the chopped onion and cook 3–4 minutes until softened. Stir in the minced garlic and cook 30 seconds.
Sprinkle in the flour and cook, stirring, for about 1 minute to form a roux.
Slowly whisk in the milk, then whisk in the sour cream. Simmer gently, stirring, until the sauce thickens, 3–4 minutes.
Reduce heat to low and stir in 2½ cups of the grated cheese until melted and smooth. Season with red pepper flakes, salt, and black pepper to taste.
Add the cooked chicken and cooked pasta to the skillet and toss until evenly coated in the cheese sauce.
Transfer the mixture to the prepared baking dish and spread evenly. Sprinkle the reserved 1/2 cup cheese over the top.
Bake for 20–30 minutes, until the casserole is bubbling and the top is lightly golden. Let rest 5–10 minutes before serving.